After upgrading to macOS Sierra, El Capitan, Yosemite or Mavericks, the Quick Look function to preview a movie file in thumbnail won’t work any more for files with extension of .avi, .wmv, .flv,. .mkv, .divx. When attempting to preview such movie files with Quick Look, it shows an empty document with zero KB in size. When double-clicking on the movie files, it opens in QuickTime Player X but then immediately converts with conversion process never finished even you wait for 24 hours. Can QuickTime X play AVI, WMV, FLV, MKV, DivX in Sierra/El Capitan/Yosemite/Mavericks?

Can iTunes Play FLAC?

Have problems of add and import FLAC to iTunes? You may ask that can iTunes play FLAC? I have lots of FLAC files and want to get them to iTunes, so that I can transfer FLAC to play on my iPhone, iPod and iPad and use iTunes match to backup to iCloud. It’s really frustrated that iTunes can’t read and open FLAC files.

FLAC (Free Lossless Audio Codec), is a codec for lossless compression of digital audio. Digital audio compressed by FLAC’s algorithm can typically be reduced to 50–60% of its original size[4] and decompressed to an identical copy of the original audio data. Though playback support for FLAC by portable audio devices and dedicated audio systems is limited compared to lossy formats such as MP3, FLAC is supported by more hardware devices than competing lossless compressed formats such as WavPack.

How to Play Blu-Ray Disc Movies in OS X Mavericks?

Does OS X Mavericks Support Blu-Ray Playback?

OS X Mavericks, the newest Mac OS X system, brings more than 200 new features including improved multiple display support, mission Control, Finder, iBooks, Calendar, Maps, and a number of other time-saving enhancements.

In video playback, OS X Mavericks improves the energy efficiency of iTunes HD video playback. The video playback engine takes greater advantage of the efficient graphics hardware in your Mac and reduces the frequency of disk access. It’s a pity that OS X Mavericks still does not bring Blu-Ray playback. So users still cannot play Blu-Ray with iTunes or QuickTime on Mac OS X 10.9. However, if you have an external Blu-Ray drive, you can play Blu-Ray movies on OS X Mavericks with the help of Blu Ray Player for Mavericks.

The Issue: Cannot transfer MP4 to iPad mini and cannot play MP4 on iPad mini

iPad mini is equipped with a beautiful 7.9 inch display, powerful A5 chip, FaceTime HD camera, iSight camera with 1080p HD video recording. iPad mini is every inch an iPad. However, when you are trying to transfer MP4 to iPad mini, only to find that certain “MP4 files cannot be copied to this iPad mini because it cannot be played on this iPad mini”, even you can transfer MP4 to iPad mini, the MP4 just can’t be played on iPad mini.

The Problem

After updating Mac OS X to Mountain Lion, many users found that “Activity Windows” was removed from the latest version Safari 6. The “Activity Windows” makes it possible for YouTube fans to download favorite YouTube videos in FLV format with Safari on Mac OS X. Now, the feature was gone which disappointed many Mountain Lion users.

The Fix to Download YouTube videos in Safari 6 on Mountain Lion

Then, is there no way to download YouTube videos in Safari 6 on Mountain Lion?

The question is absolutely yes. After installing free Safari Extension, you can start download YouTube videos in FLV/Flash with Safari on Mountain Lion like usual.

Problem

I successfully downloaded Bigasoft Total Video Converter for Mac, YouTube Download for Mac, iTunes Video Converter for Mac, WMV Converter for Mac, iPhone Ringtone Maker for Mac, DVD Ripper for Mac, iMovie Converter for Mac, but the application just cann’t be installed on Mountain Lion.

How to fix?

As the time of this post was written, Bigasoft Converter, Ripper, Downloader, Maker still had problem of be installed on Mountain Lion. But according to the developer, by doing some tricks, Bigasoft application can be opened and installed on Mountain Lion

Problem

After upgrading Mountain Lion, you might find odd problems such as Safari crashing, or the system not showing the appropriate cursor at times, either in Safari or in other programs like Microsoft Office. When you might expect to see the standard arrow as the mouse pointer, the cursor will instead look like a crosshair or another alternate cursor.

Reason

This problem is not widespread by any means, and seems to be rooted around the user installing an incompatible Adobe PDF viewer Web browser plug-in.

Since Safari provides built-in PDF compatibility, for most people there has been no real need for an alternative PDF viewer plug-in. If you do need an alternative, though, then Adobe does offer a compatible plug-in with its latest Adobe Reader for OS X; however, those who have older versions of Adobe’s CS suite or Acrobat Pro program may inadvertently install the plug-in when either repairing their current installation or reinstalling the program from scratch, steps that might commonly be done after upgrading OS X.

Users with such configurations have reported black browser screens when viewing PDF files, and in Mountain Lion have more recently seen odd cursor problems and browser crashes, and uninstalling the plug-in has resulted in these problems going away.

The Issue

With the release of Mountain Lion, many OS X 10.8 Lion users only to find that when they play MKV, AVI, MP4 or any video files with AC3 stereo audio, AC3 5.1 surround with Perian Player, no sound is played, only the video portion is played.

Interesting thing is if you convert the MKV, AVI to MP4 or M4V and passthrough the AC3-audio, the QuickTime 7 can play the file fine.

In fact, it is not strange at all if you get to know that Dolby Digital audio AC3 is a paid audio codec. QuickTime has got an ac-3 decoder from Apple, but other apps like VLC, Perian can’t use the AC3 codec due to copyright issue.